1. Field evaluation of commercial monoammonium phosphate fertilizers

   • G. L. Mullins
   • F. J. Sikora

   OriginalPaper Pages: 1 - 6

2. Estimation of phosphorus and potassium concentrations in Bermudagrass

   • A. R. Overman
   • S. R. Wilkinson

   OriginalPaper Pages: 7 - 14

3. Comparison of P- availability from monocalcium and diammonium phosphates using a mechanistic nutrient uptake model

   • P. R. Ernani
   • S. A. Barber

   OriginalPaper Pages: 15 - 20

4. Effects of varying nitrogen supply at different growth stages on nitrogen uptake and nitrogen partitioning efficiency in two wheat cultivars

   • S. J. Sarandon
   • D. O. Caldiz

   OriginalPaper Pages: 21 - 27

5. Zinc and nitrogen interaction in wheat grown in limed and unlimed acid alfisol

   • T. S. Verma
   • R. M. Bhagat

   OriginalPaper Pages: 29 - 35

6. Effect of the nitrification inhibitors dicyandiamide, nitrapyrin and thiourea onNitrosomonas europaea

   • B. Zacherl
   • A. Amberger

   OriginalPaper Pages: 37 - 44

7. Use and efficiency of a liquid nitrogen fertilizer on grassland

   • L. Carlier
   • J. Baert
   • A. De Vliegher

   Short communication Pages: 45 - 48

8. The influence of formula modifications and additives on ammonia loses from surface-applied urea-ammonium nitrate solutions

   • T. AL-Kanani
   • A. F. Mackenzie
   • H. Blenkhorn

   OriginalPaper Pages: 49 - 59

9. Announcements

   Announcement Pages: 61 - 61